Home / 9,706.81-13,395.40-5,515.06

Finding the Fourth Proportional to 9,706.81, 13,395.40 and 5,515.06

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Solution

The fourth proportional to 9,706.81, 13,395.40 and 5,515.06 is: 7,610.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,706.81 : 13,395.40 = 5,515.06 : x
  2. Step 2: Convert to fraction form
    9,706.81/13,395.40 = 5,515.06/x
  3. Step 3: Cross multiply
    9,706.81x = 13,395.40 × 5,515.06
  4. Step 4: Simplify right side
    9,706.81x = 73,876,434.72
  5. Step 5: Solve for x
    x = 73,876,434.72/9,706.81
  6. Step 6: Final answer
    x = 7,610.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.